不同气氛下杨树木屑的微波裂解特性研究

doi:10.3969/j.issn.0253-2417.2017.06.012

林产化学与工业 ›› 2017, Vol. 37 ›› Issue (6): 89-94.doi: 10.3969/j.issn.0253-2417.2017.06.012

不同气氛下杨树木屑的微波裂解特性研究

郭良¹, 亓伟², 廖丽芳¹, 魏婷¹, 许庆利¹, 颜涌捷¹

1. 华东理工大学煤气化及能源化工教育部重点实验室, 上海 200237;
2. 中国科学院广州能源研究所, 广东广州 510650

收稿日期:2017-03-27 出版日期:2017-12-25 发布日期:2018-01-05
通讯作者: 许庆利(1975-),男,副教授,博士,主要从事生物质能开发和利用;E-mail:xuqingli@ecust.edu.cn E-mail:xuqingli@ecust.edu.cn
作者简介:郭良(1992-),男,山东莱芜人,硕士生,研究方向:生物质微波裂解;E-mail:292528108@qq.com
基金资助:
国家自然科学基金资助项目（21376084）；中央高校基本科研业务费专项资金资助（222201717004）

Microwave Pyrolysis Characteristics of Poplar Sawdust Under Different Atmosphere

GUO Liang¹, QI Wei², LIAO Lifang¹, WEI Ting¹, XU Qingli¹, YAN Yongjie¹

1. Laboratory of Coal Gasification and Energy and Chemical Engineering, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
2. Guangzhou Institute of Energy, Chinese Academy of Sciences, Guangzhou 510650, China

Received:2017-03-27 Online:2017-12-25 Published:2018-01-05

摘要/Abstract

摘要： 在CO₂和N₂气氛下对木屑的微波裂解过程进行研究，结果表明：不同气氛条件对裂解油组成、焦炭性质及气体组成均有影响。20 g木屑在N₂气氛下900 W时裂解油产率最大，为28.42%，800W时裂解油中酯类、酚类分别占67.2%和20.5%，酸、醛、醇等含量较低，所得焦炭的BET比表面积为125.44 m²/g；CO₂通过参与反应影响了裂解油及焦炭的性质，木屑在CO₂气氛下800 W时裂解油产率最大可达到30.05%，与N₂气氛下的裂解油细成相比，酯类降至45.8%，酚类提高到26.4%，酸、醛、醇等增加了将近一倍约为（18.4%），而焦炭的BET比表面积升高到136.85 m²/g，并且CO₂气氛降低了气体产物中H₂的含量同时增加CO的含量。

关键词: N₂, CO₂, 木屑, 微波裂解, 裂解油

Abstract: Microwave pyrolysis of sawdust under CO₂ and N₂ atmosphere was investigated respectively. The results showed that different atmosphere had effects on the composition of pyrolytic oil, the nature of coke and the composition of gas. The maximum bio-oil yield(28.42%) was obtained under N₂ atmosphere at 900 W, the percentages of esters and phenols in the oil were 67.2% and 20.5% at 800W,respectively. The contents of acid, aldehydes and alcohols in pyrolytic product were low. The BET specific surface area of obtained coke was 125.44 m²/g. CO₂ affected the nature of bio-oil and coke by participating in the reaction. The maximum bio-oil yield(30.05%) under CO₂ atmosphere was obtained at 800 W, the percentage of esters reduced to 45.8%, and the phenols increased to 26.4%. The contents of acid, aldehydes and alcohols had nearly doubled. The BET specific surface area of coke increased to 136.85 m²/g. The CO₂ atmosphere reduced the H₂ content and increased the CO content in gas product.

Key words: N₂, CO₂, sawdust, microwave pyrolysis, pyrolysis oil

中图分类号:

TQ35

郭良, 亓伟, 廖丽芳, 魏婷, 许庆利, 颜涌捷. 不同气氛下杨树木屑的微波裂解特性研究[J]. 林产化学与工业, 2017, 37(6): 89-94.

GUO Liang, QI Wei, LIAO Lifang, WEI Ting, XU Qingli, YAN Yongjie. Microwave Pyrolysis Characteristics of Poplar Sawdust Under Different Atmosphere[J]. Chemistry and Industry of Forest Products, 2017, 37(6): 89-94.

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不同气氛下杨树木屑的微波裂解特性研究

Microwave Pyrolysis Characteristics of Poplar Sawdust Under Different Atmosphere

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